3,654 research outputs found

    Reformulating the rj-McMC Algorithm for 3D Inversion of Passive Seismic Data for Near-Surface Characterization

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    Geophysical subsurface characterization techniques could, due to their non-invasive nature, play a crucial role in the design and subsequent construction of infrastructure in urban & industrial environ- ments. Geo-data specialist company Fugro sees potential in upgrading their current ambient-seismic- noise-tomography workflow, to make use of state-of-the-art inversion schemes with the main goal of increasing the quality and accuracy of the initial-site characterization delivered to clients. In this thesis I explore the feasibility of utilizing the reverse-jump Markov chain Monte Carlo (rj-McMC) algorithm for the inversion of ambient seismic noise for characterization in urban & industrial environments. Specif- ically, testing the potential of scaling down this inversion algorithm to fit in a small scale, near-surface framework. To achieve this, I first carried out analyses to evaluate the appropriate Rayleigh wave frequency range, after which realistic noise hyperparameters, suited for this reduced scale problem, were obtained. Because of the potential exploitation of in-situ borehole measurements, I reformulated the Bayesian prior within the rj-McMC algorithm to implement these constraining shear wave velocity values appropriately. I conducted extensive synthetic experiments to gain insight into the behavior of this adapted algorithm, from which it was concluded that the inherent dynamic discretization partially prevents these constraints from being implemented to their full extent. Nevertheless, promising results lead me to conclude that the use of the rj-McMC algorithm for application in near-surface urban & industrial environments is feasible.Applied Geophysics | IDEA Leagu

    Clowns, Fools, and Killers: An Exploration of Horror, Comedy, and Madness Through the Roles of Murderer 2 and Sir Richard Ratcliffe in William Shakespeare\u27s Richard III

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    This document is a thesis submitted in partial fulfillment of the Master of Fine Arts degree in Theatre Arts with a Concentration in Musical Theatre. It is a detailed account of author RJ Magee’s artistic and scholarly process in creating the roles of Murderer 2 and Sir Richard Ratcliffe in William Shakespeare’s Richard III. The production was performed as part of Minnesota State University, Mankato’s mainstage season in October of 2022. In five chapters, this thesis chronicles the actor’s process: a preproduction analysis, a historical and critical perspective, a rehearsal and performance journal, a post-production analysis, and a process development analysis. Appendices and works cited are included

    Radiation-induced root surface caries restored with glass-ionomer cement placed in conventional and ART cavity preparations: Results at two years

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    The document attached has been archived with permission from the Australian Dental Association (8th Jan 2008). An external link to the publisher’s copy is included.Background: There are no published studies comparing the clinical performances of more-viscous glass-ionomer cement (GIC) restorations when placed using conventional and atraumatic restorative treatment (ART) cavity preparation methods to restore root surface caries. Methods: One dentist used encapsulated Fuji IX GP and Ketac-Molar to restore 72 conventional and 74 ART cavity preparations for 15 patients who had received cervicofacial radiation therapy. Two assessors evaluated the restorations at six, 12, and 24 months for retention, marginal defects and surface wear, and recurrent caries. Results: After two years, the cumulative restoration successes were 65.2 per cent for the conventional and 66.2 per cent for the ART cavity preparations, without statistical or clinical significance (P>0.50). Restoration dislodgement accounted for 82.8 per cent and marginal defects for 17.2 per cent of all failures. There were no instances of unsatisfactory restoration wear or recurrent caries observed. Teeth with three or more restored cervical surfaces accounted for 79.3 per cent of all failures (P<0.0001). Conclusions: For root surface caries restored with GIC, the use of hand instruments only with the ART method was an equally effective alternative to conventional rotary instrumentation for cavity preparation. Larger restorations had higher failures, usually from dislodgement.JY Hu, XC Chen, YQ Li, RJ Smales and KH Yi

    Development of diplotriaena-tricuspis (nematoda, diplotriaenoidea), a parasite of corvidae, in intermediate and definitive hosts

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    PT: J; CR: ANDERSON RC, 1957, CANADIAN J ZOOLOGY, V35, P15 ANDERSON RC, 1957, J HELMINTHOL, V31, P203 ANDERSON RC, 1958, ANN PARASITOL HUM CO, V33, P171 ANDERSON RC, 1959, CAN J ZOOL, V37, P609 ANDERSON RC, 1959, PARASSITOLOGIA, V1, P195 ANDERSON RC, 1962, CAN J ZOOL, V40, P1175 ANDERSON RC, 1968, CAN J ZOOL, V46, P181 ANDERSON RC, 1976, CIH KEYS NEMATODE PA, P59 ANDREWS SE, 1973, 62 WILDL DIS BAIN O, 1969, ANN PARASITOLOGIE, V44, P595 BAIN O, 1973, ANN PARASITOLOGIE, V48, P81 BAKER MR, 1978, CAN J ZOOL, V56, P2127 BASHIRULLAH AKM, 1970, PAKISTAN J ZOOL, V2, P250 BRELJE NA, 1974, J EC ENTOMOL, V67, P134 CABLE RM, 1969, ILLUSTRATED LABORATO CAWTHORN RJ, 1976, CAN J ZOOL, V54, P522 CHABAUD AG, 1954, ANN PARASITOL HUM CO, V29, P42 COOPER CL, 1974, CAN J ZOOL, V52, P1421 CROFT RE, 1957, J WILDL DIS, V11, P228 DIAZUNGRIA MC, 1963, CR ACAD SCI PARASI D, V256, P4314 DUNCKER HR, 1971, ADV ANATOMY EMBRYOLO DUNN OJ, 1974, APPLIED STATISTICS A JUDD WW, 1959, CAN FIELD NAT, V73, P130 LENNETTE EH, 1974, MANUAL CLIN MICROBIO LEVINE ND, 1966, PROTOZOAN PARASITES PICKFORD R, 1969, CAN ENTOMOL, V101, P894 SHUMILO RP, 1966, PARAZITY ZHIVOTN RAS, P120 SMILLIE KW, 1969, 19 U ALB DEP COMP SC SONIN MD, 1968, ESSENTIALS NEMATODOL, V21 WELLS JJ, 1960, J PARASITOL, V46, P623; NR: 30; TC: 9; J9: CAN J ZOOL; PG: 15; GA: JH185Source type: Electronic(1

    Hippocampal activation for autobiographical memories over the entire lifetime in healthy aged subjects: An fMRI study

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    International audienceWe used functional magnetic resonance imaging to determine the cerebral structures required during the recollection of episodic autobiographical memories according to 5 time periods covering the whole lifespan to test the 2 concurring models of memory consolidation, which propose either a temporary (standard model) or a permanent (multiple-trace model) role of the hippocampus in episodic memory retrieval. The experimental paradigm was specially designed to engage subjects (67.17 +/- 5.22 years old) in the retrieval of episodic autobiographical memories, whatever the time period, from personally relevant cues selected by questioning a family member. Moreover, the nature of the memories was checked at debriefing by means of behavioral measures to control the degree of episodicity. Behavioral data showed that recollected memories were characterized by specificity and details whatever their remoteness. Main neuroimaging data (Statistical Parametric Mapping 99) revealed the activation of a network including the left superior frontal gyri, bilateral precuneus/posterior cingulate and lingual gyri, left angular gyrus, and left hippocampus, although the subtraction analyses detected subtle differences between certain time periods. Small volume correction centered on the hippocampus detected left hippocampal activation for all time periods and additional right hippocampal activation for the intermediate periods. Further confirmation was provided by using a 3-way analysis of variance on blood oxygen level-dependent values, which revealed hippocampal activation whatever the time interval. The present data challenge the standard model of memory consolidation and support the multiple-trace model, instead. The comparison with previous literature stresses the idea that a bilateral involvement of the hippocampus characterizes rich episodic autobiographical memory recollection

    Platelet-rich plasma and macular hole surgery: A clue to their mode of action and the influence of anti-platelet agents

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    \ua9 The Author(s) 2022. Purpose: To present a case of refractory full-thickness macular hole (FTMH), in which autologous platelet-rich plasma (aPRP) was used on two consecutive occasions, and associated with successful closure only after complete cessation of anti-platelet therapy. Methods: Interventional case report. Results: A 63-year-old male with Alport syndrome underwent pars plana vitrectomy with internal limiting membrane peeling and gas for a large FTMH. The patient was on systemic anti-platelet agents for coronary disease. Post-operatively, the FTMH remained open and repeated surgery, augmented with aPRP, was performed. Although a thick pre-retinal coagulum was evident on optical coherence tomography on day one post-surgery, the second surgery failed. Ultimately, successful aPRP-augmented surgical closure of the FTMH was achieved only after complete cessation of systemic anti-platelet agents. Conclusion: Appropriate management of anti-platelet therapy may be relevant when planning aPRP use, though further large-scale studies are needed to assess the precise effect of anti-platelet therapy on the efficacy of aPRP, and to confirm the potential role of aPRP in patients with Alport syndrome
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